To rent a car you should be 18 years old (Avis) and 25 (Hertz). You need to show them your passport, have a valid driving license for two years already, and a credit card (Visa, American Express, Europay, and Diners Club).
Moscow's traffic is overwhelming much of the day, and traffic police are hostile to anyone behind the wheel and rely heavily on on-the-spot "fines" for their incomes. Most sidewalks or walkways are fair game for parking, and there are very few parking garages. Knowledge of the Cyrillic alphabet is strongly recommended for anyone driving in Russia, in order to decipher street signs. Some Rent-A-Car companies are: Avis, Budget, Hertz, Eleks-Polus, AM Rent, Budget Rent-a-Car, and Moscow Rental Service.
BICYCLES, SKATES, ROLLERBLADES
The rollerskates and skates are quite popular in Moscow during the summer. The mountain bikes are also gaining the popularity, however there are no special bike lanes and it's not safe to leave bikes on the streets, even attached. Going by bicycle is a great way to see the city, and you can move freely around. There are no official bike rentals in Moscow.
The city have good places to walk. In the center things are close together and many theaters, hotels and restaurants are minutes from each other. Alexandrovsky Gardens, the Boulevard Ring and Red Square are some of the center's prettiest places to walk. There are a few architectural treasures to be found in the narrower streets of Kitai-Gorod and south of the Old Arbat. Still, outer Moscow is home to Sparrow Hills, Kolomenskaya and the Botanical Gardens, and many of Moscow's best places to stroll.